Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

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Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2023
USD ($)
Customer
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Significant Accounting Policies [Line Items]        
Standard warranty period offered   3 years    
Revenue recognized included in deferred revenue   $ 6,438,000 $ 6,598,000  
Performance obligation partially offset of revenue recognized $ 5,156,000 3,219,000 5,156,000  
Deferred capped rental revenue 0 $ 0 0  
Rental revenue earned   30 days    
Product warranty description   The Company generally provides a warranty against defects in material and workmanship. The Company provides a 3-year, 5-year or lifetime warranty on Inogen One systems and a 3-year and lifetime warranty on Inogen At Home systems sold. The Company only offers a lifetime warranty for direct-to-consumer sales of its oxygen concentrators.    
Accounts receivable, net 62,725,000 $ 42,241,000 62,725,000  
Earnout Liability   10,000,000    
Increase in net rental revenue related to prior years   $ 1,055,000 $ 1,483,000  
Percentage of Non-US revenue invoiced in Euros   77.70% 70.90% 74.10%
Transfer of inventory to rental equipment   $ 2,187,000 $ 1,221,000 $ 906,000
Salvage value of expenditures for additions, improvements and replacements   0    
Repairs and maintenance expense   5,143,000 4,528,000 3,387,000
Depreciation and amortization   16,950,000 15,045,000 12,853,000
Loss on disposal of intangible asset     52,161,000  
Fair value of earnout benefit 13,687,000      
Advertising costs   27,120,000 33,265,000 35,183,000
Other income (expense)   468,000 (862,000) (710,000)
General and administrative   75,260,000 43,905,000 37,852,000
Construction in Process and Computer Software or Development Cost        
Significant Accounting Policies [Line Items]        
Depreciation and amortization   0 0 $ 0
Other Noncurrent Assets        
Significant Accounting Policies [Line Items]        
Noncurrent inventories expected to be realized or consumed 1,249,000 1,225,000 1,249,000  
Prepaid Expenses And Other Current Assets        
Significant Accounting Policies [Line Items]        
Inventory raw materials 7,017,000 0 7,017,000  
Customer Concentration Risk | Customer One        
Significant Accounting Policies [Line Items]        
Accounts receivable, net 22,641,000 8,639,000 22,641,000  
Customer Concentration Risk | Customer Two        
Significant Accounting Policies [Line Items]        
Accounts receivable, net 9,861,000 $ 4,994,000 $ 9,861,000  
Net Accounts Receivable | Customer Concentration Risk        
Significant Accounting Policies [Line Items]        
Number of customers | Customer   2    
Raw materials | Supplier Concentration Risk | Vendor one        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   30.80% 28.10%  
Raw materials | Supplier Concentration Risk | Vendor two        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   16.10% 17.70%  
Raw materials | Supplier Concentration Risk | Vendor three        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   7.90% 8.00%  
Fair Value Measurements Recurring | Level 3        
Significant Accounting Policies [Line Items]        
Fair value of earn out liablity 0 $ 0 $ 0  
Fair Value Measurements Recurring | Level 3 | Maximum | Physio-Assist SAS        
Significant Accounting Policies [Line Items]        
Earnout Liability   13,000,000    
Fair Value Measurements Recurring | Level 3 | Maximum | New Aera        
Significant Accounting Policies [Line Items]        
Earnout Liability   31,400,000    
Forward Contracts        
Significant Accounting Policies [Line Items]        
Related payable 422,000 155,000 422,000  
Lifetime Warranties | Direct-to-Consumer        
Significant Accounting Policies [Line Items]        
Deferred revenue 16,534,000 13,315,000 16,534,000  
Medicare's Service Reimbursement Programs | Customer Concentration Risk        
Significant Accounting Policies [Line Items]        
Accounts receivable, net $ 2,138,000 $ 2,059,000 $ 2,138,000  
Medicare's Service Reimbursement Programs | Sales Revenue, Net | Customer Concentration Risk        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   13.70% 11.60% 10.60%
Medicare's Service Reimbursement Programs | Net Accounts Receivable | Customer Concentration Risk        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   4.90% 3.40%  
Medicare's Service Reimbursement Programs | Rental Revenue | Customer Concentration Risk        
Significant Accounting Policies [Line Items]        
Concentration Risk, Percentage   67.70% 77.00% 81.90%